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19
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REMEDY
Engine will not start. No spark.
No fuel.
Engine is flooded.
Starter rope pulls harder
now than when new.
Clean or replace spark plug. Reset spark plug gap. Refer to Spark
Plug Replacement earlier in this manual.
Push primer bulb until bulb is full of fuel. If bulb does not fill, primary
fuel delivery system is blocked. Contact a servicing dealer. If primer
bulb fills, engine may be flooded, proceed to next item.
Pull starter three times with choke lever at “RUN”. If engine does
not start, move choke lever to “START” and repeat normal starting
procedure. If engine still fails to start, repeat procedure with a new
spark plug.
Contact a servicing dealer.
Engine starts but will
not accelerate.
Engine requires approxi-
mately three minutes to
warm up.
Allow engine to completely warm up. If engine does not accelerate
after three minutes, contact a servicing dealer.
Engine starts but will
only run at high speed
at half choke.
Carburetor requires
adjustment.
Contact a servicing dealer.
Engine does not reach
full speed and emits
excessive smoke.
Check lubricant fuel
mixture.
Air filter screen is dirty.
Spark arrestor screen is
dirty.
Use fresh fuel and the correct 2-cycle lubricant mix.
Clean air filter screen. Refer to Cleaning Air Filter Screen earlier
in this manual.
Contact a servicing dealer.
Engine starts, runs,
and accelerates but
will not idle.
Idle speed screw on
carburetor
Turn idle speed screw clockwise to increase idle speed.
Bar and chain running
hot and smoking.
Check chain tension for
overtightened condition
Chain oil tank empty
Tension chain. Refer to Chain Tension earlier in this manual.
Check oil tank.
Motor runs, but chain
is not rotating.
Chain tension too tight.
Check guide bar and chain
assembly.
Check guide bar and chain
for damage.
Retention chain. Refer to Chain Tension earlier in this manual.
Refer to Replacing the Bar and Chain earlier in this manual.
Inspect guide bar and chain for damage.